Answer:
A). Going back into the past through her memory .
Step-by-step explanation:
As per the question, the narrator shifts the time period of the narrative by 'going back into the past through her memory ' right after the opening paragraphs as it assists the author to not only provide the audience with the context and insights to events that has led to the present situation in the story but also in advancing the narrative forward. The memories allow the audience to relate to the events significantly and understand the intended idea/message comprehensively. Thus, option A is the correct answer.